Abstract
A pneumatic transport reactor can be used for continuous carbon capture processes using a dry sorbent because it can handle large quantities of flue gas. To design efficient reactors, it is necessary to understand the internal characteristics of a reactor with a complicated gas-solid flow. Computational fluid dynamics using an Eulerian-Eulerian approach was adopted to simulate gas-solid two-phase flow to better understand the gas-solid behaviors and heat transfer characteristics in a pneumatic transport reactor. Numerical simulations were used to analyze the pressure difference, solid mass flux, and heat transfer coefficient. The results showed that the gas-solid behavior was unstable and that localized particle flow affects the heat transfer characteristics. The degree of particle mixing near the solid return inlet was lower than that at greater heights within the reactor; in the inlet region, the heat transfer coefficient is not uniform in accordance with the non-uniformity of solid particle behavior.
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References
IPCC, Climate Change 2007: Synthesis Report, Contribution of working groups I, II and III to the fourth assessment report of the intergovernmental panel on climate change, Geneva, Switzerland (2007).
S. J. Davis, K. Caldeira and H. Damon Matthews, Future CO2 emissions and climate change from existing energy infrastructure, Science, 329 (5997) (2010) 1330–1333.
M. E. Boot-Handford et al., Carbon capture and storage update, Energy Environ. Sci., 7 (1) (2014) 130–189.
N. MacDowell et al., An overview of CO2 capture technologies, Energy & Environmental Science, 3 (11) (2010) 1645.
S.-Y. Lee and S.-J. Park, A review on solid adsorbents for carbon dioxide capture, Journal of Industrial and Engineering Chemistry, 23 (2015) 1–11.
Y.-K. Park et al., Energy recoverable multi-stage dry sorbent CO2 capture process, Energy Procedia, 63 (2014) 2266–2279.
I. Martínez et al., Review and research needs of Ca-looping systems modelling for post-combustion CO2 capture applications, International Journal of Greenhouse Gas Control, 50 (2016) 271–304.
H. Moon et al., Thermal design of heat-exchangeable reactors using a dry-sorbent CO2 capture multi-step process, Energy, 84 (2015) 704–713.
H. Yoo et al., Effect of a diffuser on gas-solid behavior in CFB riser for CO2 capture, Journal of Mechanical Science and Technology, 30 (8) (2016) 3661–3666.
H. Moon et al., Thermal-fluid characteristics on near wall of gas-solid fluidized bed reactor, International Journal of Heat and Mass Transfer, 114 (2017) 852–865.
J. C. Yannopoulos, N. J. Themelis and W. H. Gavvin, An evaluation of the pneumatic transport reactor, The Canadian Journal of Chemical Engineering, 44 (4) (1966) 231–235.
K. W. Chu and A. B. Yu, Numerical simulation of the gassolid flow in three-dimensional pneumatic conveying bends, Industrial & Engineering Chemistry Research, 47 (18) (2008) 7058–7071.
T. Li et al., Parameter sensitivity analysis on pressure drop of gas-solid flow for absorber sphere pneumatic conveying, Energy Procedia, 39 (2013) 12–19.
H. T. Bi and J. R. Grace, Flow regime diagrams for gassolid fluidization and upward transport, International Journal of Multiphase Flow, 21 (6) (1995) 1229–1236.
L. G. Gibilaro et al., Generalized friction factor and drag coefficient correlations for fluid-particle interactions, Chemical Engineering Science, 40 (10) (1985) 1817–1823.
D. J. Gunn, Transfer of heat or mass to particles in fixed and fluidised beds, International Journal of Heat and Mass Transfer, 21 (4) (1978) 467–476.
T. Knowlton et al., Comparison of CFB hydrodynamic models. PSRI challenge problem, InPSRI Challenge Problem Presented at the Eighth International Fluidization Conference, Tour, France (1995).
H. Yoo et al., Effect of the jet direction of gas nozzle on the residence time distribution of solids in circulating fluidized bed risers, Journal of the Taiwan Institute of Chemical Engineers, 71 (2017) 235–243.
W.-C. Yang, Handbook of fluidization and fluid-particle systems, CRC press (2003).
A. T. Harris, J. F. Davidson and R. B. Thorpe, Particle residence time distributions in circulating fluidised beds, Chemical Engineering Science, 58 (11) (2003) 2181–2202.
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This paper was presented at the ISFMFE 2016, LOTTE City Hotel, Jeju, Korea, October 18–22, 2016. Recommended by Guest Editor Hyung Hee Cho.
Seungyeong Choi received his B.S. degree (2016) from Yonsei University, Korea. He is a M.S. candidate in Mechanical Engineering at Yonsei University. His current research interests are on the heat transfer in fluidized bed reactor for CO2 capture.
Hoanju Yoo received his B.S. degree (2009) and M.S. degree (2016) from Yonsei University, Korea. He is currently an Engineer at Korea Aerospace Industries (KAI) LTD. in Sacheon, Korea.
Hokyu Moon received his M.S. degree (2010) and Ph.D. (2016) from Yonsei University, Korea. Dr. Moon is currently a Senior Researcher at National Fusion Research Institute (NFRI) in Daejeon, Korea.
Hyung Hee Cho received his B.S. (1982) degree from Seoul National University, Korea. He received M.S. (1985) degree from Seoul National University and Ph.D. (1992) from Minnesota University, USA. Dr. Cho is currently a Professor at the School of Mechanical Engineering at Yonsei University in Seoul, Korea.
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Choi, S., Yoo, H., Moon, H. et al. Heat transfer and gas-solid behaviors in pneumatic transport reactor used of carbon capture system. J Mech Sci Technol 31, 5081–5087 (2017). https://doi.org/10.1007/s12206-017-1001-8
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DOI: https://doi.org/10.1007/s12206-017-1001-8